22 Apr
2021
22 Apr
'21
4:15 p.m.
On 4/22/21 9:30 AM, Paul Koning wrote:
Doesn't the 780 do this as well? Or, for that matter, the 730?
On the 780 it's just microcode patches, on the 730 it's all of
microcode. (both as far as I can recall)
The 750 has microcode in ROM, but has a patchable control store, which
is....heavily used. ;)
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
Do you have sources for the FE software? I'd be
interested in looking at those...
Sadly no. Just binaries. The 86x0 is interesting in that the FE contains all the
microcode for the machine, along with diagnostics, boot files, VMB and so on. In addition
to the RT-11 system itself.
The 86x0 do load all microcode from the FE at startup time.